Week 4:

utube/youtube: been there done that before, some business, some educational, some funny, LOTS of garbage. Some view it as their chance at 15 seconds of fame.
MySpace: ditto.

The web is like anything else that's totally open to the public - buyer beware.
Example: if you are doing research on a topic XYZ-university site is a much better bet for acurate information than "This is my cool page on X!".

Also, there ARE errors on Wikipedia. Just because it's on the web doesn't mean it's gospel. Double check your facts. The internet is everything from National Enquirer type stuff to Oxford University and MIT, always consider the source of the information.

However, if you just want fun, waste-your-time stuff, try www.bored.com!
Popping virtual bubble wrap can relieve tension.

History fun for the day:
Napoleon once won a battle because the bugle boy only knew how to play CHARGE!

Week 3:

Ok, connected to 5 RSS feeds. Good luck with having time to look at them!
Did - Sweden weather, (I'm going there.) Quilting, butterfly gardening, astrology, and OCLS technology. I can see where they might be useful to some, but the time savings is debatable.

Grokker however was a waste of time for me. I use wikipedia constantly (directly) and Dogpile another search engine that searches Ask, google, yahoo, and 1/2 a dozen others at the same time. No, its "grouped" listing was not that convenient for me.